Is the pdf compressor free?

Yes — 100% free, no signup, no usage limits.

Does it save my data?

No. Inputs are processed in your browser and never uploaded to a server.

Can I use it on mobile?

Yes. The interface is fully responsive and works on iOS and Android.

Is my PDF uploaded to a server?

No. Compression happens entirely in your browser using PDF.js and jsPDF — your file never leaves your device.

Will text in the PDF stay selectable?

No. This tool rasterizes each page into a JPEG to maximize size savings, so text in the output PDF is not selectable. If you need selectable text, use the High preset which preserves the highest visual fidelity.

Which preset should I pick?

Balanced works for most documents. Pick Low for the smallest file (good for screenshots and image-heavy PDFs) and High when readability matters more than size.

Why didn't the file get smaller?

If the original PDF is already heavily compressed or contains mostly vector text, rasterizing can sometimes match or exceed the original size. Try a lower quality preset, or keep the original.

PDF Compressor

Shrink PDF file size in your browser — pick a quality preset, download a smaller PDF. Nothing is uploaded.

Upload a PDFRuns entirely in your browser

Render scale: 1.50×JPEG quality: 70%

Note: this compressor rasterizes each page into a JPEG image, so text becomes non-selectable in the output. Target-size mode may take longer because it tries multiple render passes.

How to use

Step 1: Upload a PDF
Step 2: Pick a quality preset (or tune scale & quality)
Step 3: Click Compress PDF
Step 4: Download the smaller file

Frequently asked questions

Reduce the file size of any PDF directly in your browser.